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首页> 外文期刊>RSC Advances >Synthesis of Cu2O-CuFe2O4 microparticles from Fenton sludge and its application in the Fenton process: the key role of Cu2O in the catalytic degradation of phenol
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Synthesis of Cu2O-CuFe2O4 microparticles from Fenton sludge and its application in the Fenton process: the key role of Cu2O in the catalytic degradation of phenol

机译：FENTON污泥的CU2O-CUFE2O4微粒的合成及其在FENTON工艺中的应用：CU2O在苯酚催化降解中的关键作用

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摘要

This paper presents the key role of Cu2O in Fenton catalysis using Cu2O-CuFe2O4 magnetic microparticles, which were prepared using Fenton sludge as an iron source. The catalytic activity of the as-prepared Cu2O-CuFe2O4 and CuFe2O4 microparticles was evaluated in a heterogeneous Fenton system for the degradation of recalcitrant phenol. The Cu2O-CuFe2O4 microparticles demonstrated relatively superior catalytic performance as compared to CuFe2O4 microparticles when used as a Fenton catalyst. The relatively higher catalytic activity of Cu2O-CuFe2O4 for phenol degradation during the Fenton process could be attributed to the availability of both monovalent [Cu(I)] and divalent [Cu(II)] as well as Fe(II)/Fe(III) redox pairs, which could react quickly with H2O2 to generate hydroxyl radicals (HO center dot). An electron bridge was formed between Cu(I) and Fe(III), which accelerates the formation of Fe(II) species in order to boost the reaction rate. Highly reactive and excessively available Cu(I) species for as prepared Cu2O-CuFe2O4 microparticles could be considered to be rather crucial for the generation of highly reactive HO center dot radical species. In addition, the as-prepared Cu2O-CuFe2O4 magnetic microparticles exhibited sound stability and reusability.
机译：本文介绍了Cu2O-Cufe2O4磁性微粒的Cu2O在FENTON催化中的关键作用，其使用FENTON污泥作为铁源制备。在非均相FENTON系统中评价AS制备的CU 2 -CUFE2O4和CUFE 2 O 4微粒的催化活性，用于降解酚醛苯酚。当用作FENTON催化剂时，Cu2O-CuFe2O4微粒与CuFe 2 O 4微粒相比，催化性能相对优越。在芬顿工艺期间，Cu 2 -Cufe2O4的Cu 2 -Cufe 2 O 4的相对较高的催化活性可归因于单价[Cu（I）]和二价[Cu（II）]以及Fe（II）/ Fe（III）的可用性）氧化还原对，其可以用H 2 O 2迅速反应以产生羟基自由基（Ho中心点）。在Cu（I）和Fe（III）之间形成电子桥，其加速Fe（II）物种的形成以提高反应速率。对于制备的Cu2O-CuFe2O4微粒的高反应性和过度可用的Cu（I）物种可被认为是对产生高反应性Ho中心点自由基物种的产生相当关键。此外，AS制备的Cu2O-CuFe2O4磁性微粒表现出声音稳定性和可重用性。

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  • 来源
    《RSC Advances》 |2018年第11期|共9页
  • 作者

    Faheem Muhammad; Jiang Xinbai; Wang Lianjun; Shen Jinyou;

  • 作者单位

    Nanjing Univ Sci &

    Technol Sch Environm &

    Biol Engn Jiangsu Key Lab Chem Pollut Control &

    Resources R Nanjing 210094 Jiangsu Peoples R China;

    Nanjing Univ Sci &

    Technol Sch Environm &

    Biol Engn Jiangsu Key Lab Chem Pollut Control &

    Resources R Nanjing 210094 Jiangsu Peoples R China;

    Nanjing Univ Sci &

    Technol Sch Environm &

    Biol Engn Jiangsu Key Lab Chem Pollut Control &

    Resources R Nanjing 210094 Jiangsu Peoples R China;

    Nanjing Univ Sci &

    Technol Sch Environm &

    Biol Engn Jiangsu Key Lab Chem Pollut Control &

    Resources R Nanjing 210094 Jiangsu Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

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